I have the same issue. The workaround is to save and use the rawValue of that enum and compare them instead.

I have the same problem with BarMarks. I didn't change anything in the code around Charts, now broken in Xcode 16 Beta 5. I already checked if the correct data and values go into the Chart and there is no problem. I have a weekly chart where every day has some value but doesn't show BarMark for some days. I hope it's a bug because I don't know what is happening here. :-D